管理员
论坛积分
分
威望 点
贡献值 个
金币 枚
|
程序很简单,windows环境下的,客户端和服务器程序都在本机运行,在客户端输入发送给服务器的字符串,服务器收到字符串后会打印出来,同时与"abc"比较,与"abc"相同就会返给客户端,输入的是正确的,不同会告诉客户端输入时错误的。
& H% v Z5 J$ p( j' E/ ]0 L/ @8 l客户端程序:client.cpp1 K3 P! c+ q% c9 K9 ~- E/ B
- #include <winsock2.h>) _& L: u2 _7 p
- #include <stdio.h>, D3 L$ u" B$ f. c
- #include <stdlib.h>
4 t9 l$ \* Z( \' U; e" k
. W4 j8 K* d6 _- #define DEFAULT_PORT 5150
" I% r! B" G5 }! Y, Q - #define DEFAULT_BUFFER 2048( k! f$ P! G* M7 u1 p
5 n/ W/ r! P/ u2 Q8 g) {9 k. t- char szServer[128],: B8 B1 Y/ C7 j% c+ [
- szMessage[1024];
6 f, X, Y7 {4 v) D: J* K - int iPort = DEFAULT_PORT;/ W6 f% F1 l- }0 Y) o ~
- / W! S3 S( D! P$ v
- int main() j5 v. v2 k" v" ^4 D: ]" N: d d* [! W
- {: I; U2 u4 H( _, J
- WSADATA wsd;
5 n# O* I; S) p! ^ - SOCKET sClient;7 M% Q9 j6 H8 u; l. ]2 e, r$ e1 H7 i
- char szBuffer[DEFAULT_BUFFER];1 Z. {; u6 C0 Q2 E
- int ret;
8 O( ?3 ]* Z! D j) o - struct sockaddr_in server;2 L+ Z0 j5 w, ^( o9 |! G
- struct hostent *host = NULL;' i5 [! e9 f7 C" {
- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)9 @6 @/ S% L; R' \& }, p
- {
8 [# C! j$ m0 N) q) d - printf("Failed to load Winsock library!\n");
- z. ]4 H+ B7 Q) j3 f) W - return 1;
9 ]" a/ K6 d/ p7 F) ? - }
2 f H7 |$ Z: U; ~2 n - printf("Enter a string to send to server:\n");
6 {5 M2 p! }* R' l3 c2 I# u - gets(szMessage);' [8 h$ T, M+ W: f( S; k1 d* X
- // Create the socket, and attempt to connect to the server
" a. K% o# C6 F8 Y e; Q5 k! n6 I - sClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
2 r$ X, K/ ]5 P) E1 Z9 q1 f - if (sClient == INVALID_SOCKET)
8 l; S+ C4 k; \2 A! {( K - {
/ @7 J; \; H: E - printf("socket() failed: %d\n", WSAGetLastError());
6 d/ f f: ^' s7 o! O0 ~% X' l - return 1;
d. P, j5 e* [* U+ ] - }' s& C( {6 X( h, s
- server.sin_family = AF_INET;
* v' a/ ^+ r6 t% O7 v* h( w: k - server.sin_port = htons(iPort);
- r& |/ `+ ^) C/ C - server.sin_addr.s_addr = inet_addr("127.0.0.1");
1 M: S+ y% a3 n' K
- `5 J/ v' K9 G3 n) R- if (connect(sClient, (struct sockaddr *)&server,
1 L; b/ W( d/ e$ p+ d! A, u, J4 T - sizeof(server)) == SOCKET_ERROR)
$ l) O) M) K+ M9 \! F1 c2 Z - {
% H5 r) }& ?5 ^* i2 x - printf("connect() failed: %d\n", WSAGetLastError());% ]3 G9 d3 C) w7 }+ w6 L+ \
- return 1;
H6 | [0 N; ^& H# M; [ - }
) F- Y. k y3 \" l! W - // Send and receive data! N& l& k4 U7 x- {( \
- ret = send(sClient, szMessage, strlen(szMessage), 0);
4 I" S7 Z% L, S- P2 g l2 [2 h( ^9 T; U - if (ret == SOCKET_ERROR)
( f* p: H7 z) d: Y( W7 L+ ?' ^% I - {
" k8 J# I$ ]. @0 i - printf("send() failed: %d\n", WSAGetLastError());' X( @% c" [* u& l
- }
+ j; o9 y. H1 C# ]/ ?4 I - else{
1 r4 p& D, B/ @4 D0 O% s - printf("Send '%s' \n", szMessage);
0 V( {+ ~+ ?. c5 ~9 N0 C8 W" m - ret = recv(sClient, szBuffer, DEFAULT_BUFFER, 0);+ U4 N) ~' O0 J0 b( \
- if (ret == SOCKET_ERROR){- g- l1 M. f7 I' H2 _. ?5 K: J; m; Y
- printf("recv() failed: %d\n", WSAGetLastError());
1 ~! A e) R; j+ F! b - }" f( g: G2 t# K4 Y
- else{$ `; l7 `/ @& r2 x- H
- szBuffer[ret] = '\0';
, b% N0 y/ Q2 o8 ` - printf("RECV: '%s'\n",szBuffer);# w& H3 F& M1 b7 n% a
- }
6 F; {8 w5 V' D* [/ S ~+ h - }
3 j6 I0 U4 q5 k - closesocket(sClient); E- f/ y3 Y8 [! q$ U* n1 U
5 h/ l& [* ?9 G' |- WSACleanup();
' g; j: Q" b8 t2 l# o - return 0;$ V: B5 O- ?+ R2 G9 e9 N
- }
复制代码 服务器程序:server.cpp3 h$ E5 I" D9 X* w
- #include <winsock2.h>
& @% O: A6 m, c! Z: b1 `. J" a - #include <stdio.h>
3 l b" p0 A* w \5 _! V - #include <stdlib.h>
" N8 M8 ?) o: F9 l - 9 ^2 b2 Z7 F# u% T/ _/ F/ W7 h
- #define DEFAULT_PORT 5150$ a! p6 G2 l7 k4 j6 g7 C; K( W
- #define DEFAULT_BUFFER 4096
( m: z" f9 q9 Z8 h. c) P. w: @$ r - 4 N$ z. a2 Z" V" B0 |( M6 [/ j
- int iPort = DEFAULT_PORT;
9 M! D! J8 i* E$ B - char szAddress[128];6 ]3 S! p0 ~# ~
- 4 d& |4 E& y) X+ ?
- DWORD WINAPI ClientThread(LPVOID lpParam)2 ?8 B' t7 H% s; I* l- j
- {/ i6 s0 y0 I( [* u2 A3 e; n
- SOCKET sock=(SOCKET)lpParam;: y; j) _3 _4 [ i
- char szBuff[DEFAULT_BUFFER];
' h1 O1 v+ {, b4 K( d: p; R) R% ` - int ret;# v0 X( ~$ v& n( g& J# S' X! J5 h
# J3 `& |2 x d: o+ r n' j% N- while(1)8 C- b2 e6 b/ ]5 M3 P
- {
) I& i% N7 q+ Q2 }: W - ret = recv(sock, szBuff, DEFAULT_BUFFER, 0);" E# R& p' q+ A4 R
- if (ret == 0)9 \" Z% R7 G) F7 H+ {' G/ b7 H+ E8 n2 c
- break;/ W! s- j" {5 l7 w- j5 z# H/ K+ d
- else if (ret == SOCKET_ERROR)
3 T6 M0 C: \6 R. Q, x! m - {
+ A+ n% m7 i% _: T% j& m% N7 C - printf("recv() failed: %d\n", WSAGetLastError());
6 l0 o& y8 K/ K" y - break;* [; x2 F% y. @: K5 S) o9 N }
- }) _& T" t1 z/ \) R+ s6 d9 s6 a
- szBuff[ret] = '\0';' G8 E3 [2 E9 `: [' \
- printf("RECV: '%s'\n", szBuff);5 T* P' I" a% T* k6 Q
- if(strcmp(szBuff,"abc")==0){
0 e2 ?7 d2 z8 Z9 o- ~$ | - memcpy(szBuff,"Send the correct string!",25);0 Z3 L6 |, o- D# _! p# G
- }
- d- E+ U7 h6 C: Y5 i - else{6 i! a& ^. H! N5 I
- memcpy(szBuff,"Send the wrong string!",23);
( K$ o1 Q- g" ]: K G" r - }
2 M3 s* m8 T1 s9 [" s - ret = send(sock, szBuff, strlen(szBuff), 0);2 K- x# S4 D* E+ j9 Q
- if (ret == SOCKET_ERROR){
% P* P% n& R* m3 i- t - printf("send() failed: %d\n", WSAGetLastError());
4 I( w) {! g7 p6 K6 k5 V - }" w* c/ Z T! [6 I$ T7 d! f: a
- }
# c( j! _! k+ W/ F. e - return 0;
8 v6 ^% A( h+ }; j5 f0 |* ?! e - }
1 k2 F' P0 O3 v- {% L - 8 l) [4 u' y7 b/ _, ~$ @: W# g
- int main()
$ ~' J- w: P' c5 ?4 T! m - {
! P: R, p! y f& E4 M h% a& C - WSADATA wsd;2 S" e4 N Y9 J+ s9 m
- SOCKET sListen,
. \& N y+ o) p% l( a - sClient;5 j: A3 k" ?: ?1 t) y: O& o7 e* g
- int iAddrSize;0 m/ k, r# a3 o* A) ~& i6 c9 {
- HANDLE hThread;5 q1 A0 }% K& i+ J' F1 r
- DWORD dwThreadId;
& M1 I) i0 G4 Q, }9 F! v4 W6 Z3 u; w - struct sockaddr_in local,# q, x* ?0 I( @3 f; W7 s+ ?1 t
- client;, P5 m6 ?3 {! j, w% Y p3 Z
- ) x. S5 s1 h! y8 ~6 ~
- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
$ l* E( m7 [: u6 L - {; v0 F9 h; D3 i6 V/ D' s! w
- printf("Failed to load Winsock!\n");
# G/ [: H+ K$ l8 k6 g1 I2 ? - return 1;
9 D( w% U% P4 H - }8 f8 y, I: B0 ^6 I6 |
- // Create our listening socket
$ W0 M8 a* x) L2 w5 J; J - sListen = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
' Z, [7 s0 m" |1 e# C4 r6 n4 v - if (sListen == SOCKET_ERROR)! b0 `; }* ^7 m/ e* W( e1 u# s
- {: g- |) h; `3 ` n2 `, G
- printf("socket() failed: %d\n", WSAGetLastError());9 z0 Y% l6 \" u( W
- return 1;! |% v3 L" S$ k+ i% A w2 m o8 ?7 c
- }* {0 A2 o: q+ d
- local.sin_addr.s_addr = htonl(INADDR_ANY);
9 _. Z: ^3 E* W0 M" ~' N7 u - local.sin_family = AF_INET;
6 k2 Y4 n: ^4 |/ [" R - local.sin_port = htons(iPort);
( `7 a6 T7 e: L z
& [+ w; b+ x4 b/ h( s- if (bind(sListen, (struct sockaddr *)&local,
& }" j# r) }/ O. m: R: N) l - sizeof(local)) == SOCKET_ERROR)0 q* } ^3 o/ [( D, |* l
- {; X! p+ h$ g$ A9 p) Z
- printf("bind() failed: %d\n", WSAGetLastError());
; |. U$ H* p( x - return 1;
" U9 z# m: }, N* d$ \! I - }
9 e* T* u& j2 ^1 L1 @ - listen(sListen, 8);$ U% Z& Y, _4 G9 R) J
- // In a continous loop, wait for incoming clients. Once one
4 Y4 c! Q. i e3 R1 r I6 z9 q - // is detected, create a thread and pass the handle off to it.5 l8 @& {: H9 \3 |; p
- while (1); B) a) @. m* J' t* m
- {& j3 B7 @) b) g% r. K4 O) g6 K
- iAddrSize = sizeof(client);
/ K1 Z7 R( q, ~ X! G - sClient = accept(sListen, (struct sockaddr *)&client,
. q2 y( z9 j* J1 Y6 j - &iAddrSize);
! _* _( |8 k* O- X- Q' b; \- Q4 T - if (sClient == INVALID_SOCKET)/ l7 S0 S/ s8 x V" i
- { % ~& i' l* J) G; j
- printf("accept() failed: %d\n", WSAGetLastError());( Z% U3 g6 ^* @0 M' e+ F3 O
- break;0 m1 s s3 T: {& ]
- }& }0 I- \' i: r/ _' }1 c
- printf("Accepted client: %s:%d\n",' z1 e: c' \. ^4 h
- inet_ntoa(client.sin_addr), ntohs(client.sin_port));
. G( |- h' M3 o1 M- U; |3 _5 b
: ~0 D* H! e% A5 L( S- hThread = CreateThread(NULL, 0, ClientThread,
" w0 x1 ?* I' k; {& U' H B+ i! @ - (LPVOID)sClient, 0, &dwThreadId);
6 v9 m7 Z2 W) \1 `4 E2 N - if (hThread == NULL)2 q7 N+ |1 g/ B
- {, }; y* Q1 A3 b8 X% i" z9 k. n
- printf("CreateThread() failed: %d\n", GetLastError());$ t6 h) J! `0 z5 l8 ~1 x+ W
- break;( M* L: H. A+ v
- }
5 \' c& D- Z6 g" \# t% [$ s - CloseHandle(hThread);; t1 M% x5 W* X1 u
- }
: ^# w* o- P% Q2 |1 K - closesocket(sListen);, |: J5 N4 c8 N0 ?0 ]9 K
-
( y& }9 i9 g; S6 N$ p - WSACleanup();8 H5 Y. X9 P1 J$ \' o6 R, ^2 R- S
- return 0;
. p- y# O- |3 Y) ~# f1 {- b1 V$ w% D - }
复制代码
8 r9 f- F5 k9 X, t2 f9 V; Z7 x) |7 Q
) t) ?, [5 x' G) k; J& x& b$ Q) A, S2 C
3 G: Z# g) p5 t3 { |
|